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Andita Nataria Fitri Ganda
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Kampus Ketintang Gedung K4, Fakultas Vokasi Universitas Negeri Surabaya, Jalan Raya ketintang, Kec Gayungan, Kota Surabaya (60231)
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INDONESIA
Jurnal Rekayasa Mesin
Published by Universitas Negeri Surabaya
ISSN : 2337828X     EISSN : 29887429     DOI : https://doi.org/10.26740/jrm.v9i03
Core Subject : Science, Engineering,
Aerospace Engineering Automotive Engineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
The Journal of Mechanical Engineering (JRM) is published three times a year, in April, August, and December, by the Applied Bachelor Degree Program (D4) in Mechanical Engineering, Faculty of Vocational Studies, Universitas Negeri Surabaya (UNESA). It serves as a medium of information and a forum for Development of Technology, Numerical Studies, Experimental Studies, and Applied Research in the field of Mechanical Engineering. The journal contains scientific papers, summaries of research results, literature reviews, and original critical ideas. The editorial team invites researchers, practitioners, and anyone interested in contributing articles that have not been published elsewhere. The themes of the articles include Machining Materials and Metallurgy Manufacturing Processes Mechanical Design Control Systems
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 312 Documents
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Analisis Pengaruh Kecepatan Putaran Rol Terhadap Efisiensi Pengupasan Pada Mesin Pengupas Sabut Kelapa Tri agung; Riandadari, Dyah; Sakti, Arya Mahendra; Nugroho, Aji
Jurnal Rekayasa Mesin Vol 11 No 01 (2026): JRM April 2026 (In Press)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v11i01.75883

Abstract

Abstract: This study aims to analyze the effect of roller rotational speed variations on the efficiency, capacity, and quality of coconut husk peeling in a coconut husk peeling machine using small- and large-sized coconuts as test objects. The roller rotational speed variations applied were 120 rpm, 150 rpm, 180 rpm, 210 rpm, and 240 rpm, where the rotational speed served as the main parameter influencing peeling time, process success rate, and the potential for coconut damage. The research employed an experimental method through direct performance testing of the machine, with observation parameters including peeling time, machine capacity (fruits/hour), and peeling efficiency (%). The test results showed that at rotational speeds of 120 rpm and 150 rpm, the peeling efficiency of small coconuts reached 100%, while the peeling efficiency of large coconuts remained relatively low at 70% and 60%, respectively. At a rotational speed of 180 rpm, the peeling efficiency of large coconuts increased to 100%, with a machine capacity of 563 fruits/hour. Increasing the roller rotational speed to 210 rpm and 240 rpm further enhanced the machine capacity to 784 fruits/hour and 849 fruits/hour, respectively, while reducing the average peeling time to 4.2 seconds. However, at these higher speeds, the peeling efficiency of small coconuts decreased due to the increased mechanical forces acting on the material. Based on the results, a roller rotational speed of 180 rpm was identified as the most optimal condition, as it provided high peeling efficiency, adequate machine capacity, and good peeling quality without causing significant damage to the coconuts.
RANCANG BANGUN MESIN PENGOLAH BAWANG OTOMATIS DENGAN MEKANISME 3 IN 1 MUHAMAD FARYS MUHAMAD; Riandadari; Aji Nugroho; Firman Yasa Unesa
Jurnal Rekayasa Mesin Vol 11 No 01 (2026): JRM April 2026 (In Press)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v11i01.73750

Abstract

The continuous development of technology encourages innovation in various fields, including agriculture and food processing such as shallots and garlic, which are important commodities in Indonesian cuisine. The need for these two types of onions increases by 3–5% per year in line with population growth, the culinary industry, and modern lifestyles. With this development, an automatic onion processing machine with a 3-in-1 mechanism was created. The testing method used in this study is testing the performance of the 3-in-1 onion processing machine. The test was carried out at a rotational speed of 1400 RPM, using test materials in the form of shallots and garlic, each weighing 1 kg. The parameters measured include the time of the peeling, slicing, and grinding process (grams/minute), the working capacity of the tool (kg/hour), and the quality of the processed results which are assessed from the level of cleanliness of the peel, the thickness of the slices, and the smoothness of the ground results.

Page 32 of 32 | Total Record : 312

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